# InternalMedia.java

    /*
     * Copyright (C) 2000 - 2024 Silverpeas
     *
     * This program is free software: you can redistribute it and/or modify
     * it under the terms of the GNU Affero General Public License as
     * published by the Free Software Foundation, either version 3 of the
     * License, or (at your option) any later version.
     *
     * As a special exception to the terms and conditions of version 3.0 of
     * the GPL, you may redistribute this Program in connection with Free/Libre
     * Open Source Software ("FLOSS") applications as described in Silverpeas's
     * FLOSS exception. You should have received a copy of the text describing
     * the FLOSS exception, and it is also available here:
     * "http://www.silverpeas.org/docs/core/legal/floss_exception.html"
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
     * GNU Affero General Public License for more details.
     *
     * You should have received a copy of the GNU Affero General Public License
     * along with this program. If not, see <https://www.gnu.org/licenses/>.
     */
    package org.silverpeas.components.gallery.model;

    import org.apache.commons.io.FileUtils;
    import org.apache.commons.io.FilenameUtils;
    import org.silverpeas.components.gallery.constant.GalleryResourceURIs;
    import org.silverpeas.components.gallery.constant.MediaMimeType;
    import org.silverpeas.components.gallery.constant.MediaResolution;
    import org.silverpeas.core.date.period.Period;
    import org.silverpeas.core.io.file.SilverpeasFile;
    import org.silverpeas.core.io.file.SilverpeasFileProvider;
    import org.silverpeas.core.io.media.video.ThumbnailPeriod;
    import org.silverpeas.core.notification.message.MessageManager;
    import org.silverpeas.core.util.DateUtil;
    import org.silverpeas.core.util.URLUtil;
    import org.silverpeas.kernel.util.StringUtil;

    import java.io.File;
    import java.nio.file.Paths;
    import java.util.ArrayList;
    import java.util.Date;
    import java.util.List;
    import java.util.Objects;

    import static org.silverpeas.kernel.util.StringUtil.isDefined;

    /**
     * This class represents a Media that the content (the file in other words) is saved on the
     * Silverpeas workspace.
     */
    public abstract class InternalMedia extends Media {
      private static final long serialVersionUID = 2070296932101933853L;

      private boolean downloadAuthorized = false;
      private String fileName;
      private long fileSize = 0;
      private MediaMimeType fileMimeType = MediaMimeType.ERROR;
      private Period downloadPeriod = Period.UNDEFINED;
      private MetaDataSet metaData = null;

      protected InternalMedia() {
        super();
      }

      protected InternalMedia(final InternalMedia other) {
        super(other);
        this.downloadAuthorized = other.downloadAuthorized;
        this.fileName = other.fileName;
        this.fileSize = other.fileSize;
        this.fileMimeType = other.fileMimeType;
        this.downloadPeriod = other.downloadPeriod;
        if (other.metaData != null) {
          this.metaData = new MetaDataSet(other.metaData);
        }
      }

      /**
       * Indicates if the media is marked as downloadable. The visibility period is not taken into
       * account here.
       *
       * @return true if marked as downloadable, false otherwise.
       */
      public boolean isDownloadAuthorized() {
        return downloadAuthorized;
      }

      /**
       * Indicates if the download is possible according the visibility information. The date of day
       * must be included into visibility period.
       *
       * @return true if download is possible, false otherwise.
       */
      @Override
      public boolean isDownloadable() {
        Date dateOfDay = DateUtil.getDate();
        boolean isDownloadable = isDownloadAuthorized() && isVisible(dateOfDay);
        if (isDownloadable && getDownloadPeriod().isDefined()) {
          isDownloadable = getDownloadPeriod().contains(dateOfDay);
        }
        return isDownloadable;
      }

      public String getFileName() {
        return fileName;
      }

      public void setFileName(String fileName) {
        this.fileName = fileName;
      }

      public long getFileSize() {
        return fileSize;
      }

      public void setFileSize(long fileSize) {
        this.fileSize = fileSize;
      }

      public MediaMimeType getFileMimeType() {
        return fileMimeType;
      }

      public void setFileMimeType(MediaMimeType fileMimeType) {
        this.fileMimeType = fileMimeType != null ? fileMimeType : MediaMimeType.ERROR;
      }

      public void setDownloadAuthorized(boolean downloadAuthorized) {
        this.downloadAuthorized = downloadAuthorized;
      }

      public Period getDownloadPeriod() {
        return downloadPeriod;
      }

      public void setDownloadPeriod(final Period downloadPeriod) {
        this.downloadPeriod = Period.check(downloadPeriod);
      }

      public MetaDataSet getAllMetaData() {
        if (metaData == null) {
          metaData = new MetaDataSet();
          metaData.load(this);
        }
        return metaData;
      }

      @Override
      public String getApplicationThumbnailUrl(MediaResolution mediaResolution) {
        if (mediaResolution == null || mediaResolution == MediaResolution.ORIGINAL ||
            mediaResolution == MediaResolution.NORMAL) {
          mediaResolution = MediaResolution.PREVIEW;
        }
        if (getType().isPhoto()) {
          return getPhotoThumbnailUrl(mediaResolution);
        } else if (getType().isVideo()) {
          if (getVideoThumbnailUrl()) {
            return GalleryResourceURIs.buildVideoThumbnailURI(this, ThumbnailPeriod.Thumbnail0)
                .toString();
          }
          return super.getApplicationThumbnailUrl(mediaResolution);
        } else {
          return super.getApplicationThumbnailUrl(mediaResolution);
        }
      }

      private boolean getVideoThumbnailUrl() {
        SilverpeasFile thumbFile =
            SilverpeasFileProvider.getFile(FileUtils
                .getFile(Media.BASE_PATH.getPath(), getInstanceId(),
                    getWorkspaceSubFolderName(),
                    "img0.jpg").getPath());
        return thumbFile != null && thumbFile.exists();
      }

      private String getPhotoThumbnailUrl(final MediaResolution mediaResolution) {
        if (MediaResolution.WATERMARK == mediaResolution) {
          SilverpeasFile fileWatermark = getFile(MediaResolution.WATERMARK);
          if (!fileWatermark.exists()) {
            return "";
          }
        }
        if (StringUtil.isDefined(getFileName()) && isPreviewable()) {
          return GalleryResourceURIs.buildMediaContentURI(this, mediaResolution).toString();
        } else {
          String thumbnailUrl = URLUtil.getApplicationURL() + "/gallery/jsp/icons/notAvailable_" +
                                MessageManager.getLanguage() + mediaResolution.getThumbnailSuffix() + ".jpg";
          return FilenameUtils.normalize(thumbnailUrl, true);
        }
      }

      @Override
      public SilverpeasFile getFile(final MediaResolution mediaResolution, final String size) {
        if (StringUtil.isNotDefined(getFileName())) {
          return SilverpeasFile.NO_FILE;
        }
        final int maxSize = 2;
        List<String> potentialFileNames = new ArrayList<>(maxSize);
        potentialFileNames.add(getFileName());
        if (getType().isPhoto()) {
          final String thumbnailSuffix = mediaResolution.getThumbnailSuffix();
          final String originalFileExt = "." + FilenameUtils.getExtension(getFileName());
          if (mediaResolution == MediaResolution.NORMAL) {
            potentialFileNames.add(getId() + thumbnailSuffix + originalFileExt);
          } else if (StringUtil.isDefined(thumbnailSuffix)) {
            potentialFileNames.set(0, getId() + thumbnailSuffix + originalFileExt);
          }
          if (!".jpg".equalsIgnoreCase(originalFileExt)) {
            // this case is about taking in charge the old medias
            potentialFileNames.add(getId() + thumbnailSuffix + ".jpg");
          }
        }
        SilverpeasFile file = SilverpeasFile.NO_FILE;
        for (String potentialFileName : potentialFileNames) {
          File physicalFile = FileUtils
              .getFile(Media.BASE_PATH.getPath(), getInstanceId(), getWorkspaceSubFolderName(),
                  potentialFileName);
          if (potentialFileNames.size() > 1 && !physicalFile.exists()) {
            continue;
          }
          if (isDefined(size)) {
            physicalFile = Paths.get(physicalFile.getParentFile().getPath(), size,
                physicalFile.getName()).toFile();
          }
          file = SilverpeasFileProvider.getFile(physicalFile.getPath());
        }
        return file;
      }

      @Override
      public boolean equals(Object o) {
        if (!(o instanceof InternalMedia)) return false;
        return super.equals(o);
      }

      @Override
      public int hashCode() {
        return Objects.hash(super.hashCode(), downloadAuthorized, fileName, fileSize, fileMimeType,
            downloadPeriod, metaData);
      }
    }